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Dissertations / Theses on the topic 'Millimetre wave communications'

Author: Grafiati

Published: 4 June 2021

Last updated: 8 February 2022

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1

Dixon, B. J. "Millimetre-wave technology for broadband indoor communications." Thesis, University of Leeds, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.496613.

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2

Peng, Ying. "On-chip low profile metamaterial antennas for wireless millimetre-wave communications." Thesis, University of Manchester, 2012. https://www.research.manchester.ac.uk/portal/en/theses/onchip-low-profile-metamaterial-antennas-for-wireless-millimetrewave-communications(4afa6d73-3d4f-4037-8fbb-4c7122cd1089).html.

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The aim of this work is to design and realise millimetre-wave low profile on-chip antennas for 60 GHz short-range wireless communication systems. For this application, it is highly desirable that the antenna can be compatible with standard silicon complementary metal oxide semiconductor (Si CMOS) technology for high level integration and mass production a low cost. Firstly, millimetre-wave antennas on normal dielectric substrates and cavities were studied in detail in order to better understand how the antenna parameters could have effects on their performance at millimetre-wave spectrum. On-c

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3

Al-Dabbagh, Rasha Khalid Mohammed. "A photonic generation and transmission system for millimetre-wave futuristic communications." Thesis, Brunel University, 2018. http://bura.brunel.ac.uk/handle/2438/16249.

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In this thesis, a fully millimetre-wave (mm-wave) generation and transmission system is proposed for futuristic communications. Significant challenges have been dealt with regarding the proposed system, including designing the mm-wave generation and transmission technique, and its application in cellular networks. These challenges are presented through five main contributions and validated via Optiwave Design Software and MATLAB simulation tools. Firstly, three novel photonic generation methods are proposed and designed based on the characteristics of Brillouin fibre laser and the Stimulated B

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4

Abdullah, Hazim B. "Microwave and millimetre-wave omnidirectional antennas in the azimuth plane for mobile communications." Thesis, University of Bath, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.261831.

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5

Hemadeh, Ibrahim. "Transceiver design for millimetre-wave communications : a space-time-frequency multi-functional processing approach." Thesis, University of Southampton, 2017. https://eprints.soton.ac.uk/418979/.

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In this thesis, we investigate a suite of transceiver designs for transmission over millimetre wave (mmWave) channels. Furthermore, we conceive the philosophy of Layered Multi-Group (LMG) arrangements relying on the concept of Multi-Functional Multiple- Input Multi-Output (MF-MIMO) systems. More specifically, we propose an amalgam of various MIMO techniques, namely diversity, multiplexing and beamforming techniques as well as Multi-User MIMO (MU-MIMO), user grouping and antenna layering methods, which are capable of simultaneously gleaning various MIMO advantages for the sake of overcoming the

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6

Zevallos, Luna Jose Alberto. "Intégration d'antennes pour objets communicants aux fréquences millimétriques." Thesis, Grenoble, 2014. http://www.theses.fr/2014GRENT058/document.

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Cette thèse porte sur l'étude d'antennes intégrées sur silicium aux fréquences millimétriques, dans le but d'aboutir à des modules d'émission-réception totalement intégrés et reportés par des technologies standards dans un objet communicant. Ce travail comprend deux axes majeurs: Le première axe traite de l'étude, la conception et la réalisation d'antennes intégrées dans un boitier standard QFN couplées à un circuit émetteur-récepteur Ultra Large Bande (ULB) à 60 GHz comprenant des antennes intégrées de type dipôle replié fabriquées en technologie CMOS SOI 65-nm sur silicium haute résistivité.

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7

Fan, Shu-Hao. "Convergence of millimeter-wave and photonic interconnect systems for very-high-throughput digital communication applications." Diss., Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/42888.

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In the past, radio-frequency signals were commonly used for low-speed wireless electronic systems, and optical signals were used for multi-gigabit wired communication systems. However, as the emergence of new millimeter-wave technology introduces multi-gigabit transmission over a wireless radio-frequency channel, the borderline between radio-frequency and optical systems becomes blurred. As a result, there come ample opportunities to design and develop next-generation broadband systems to combine the advantages of these two technologies to overcome inherent limitations of various broadband end

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8

Nicolini, Andrea. "Multipath tracking techniques for millimeter wave communications." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2019. http://amslaurea.unibo.it/17690/.

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L'obiettivo di questo elaborato è studiare il problema del tracciamento efficiente e continuo dell'angolo di arrivo dei cammini multipli dominanti in un canale radio ad onde millimetriche. In particolare, viene considerato uno scenario di riferimento in cui devono essere tracciati il cammino diretto da una stazione base e due cammini riflessi da ostacoli in diverse condizioni operative e di movimento dell'utente mobile. Si è assunto che l'utente mobile può effettuare delle misure rumorose di angolo di arrivo dei tre cammini, uno in linea di vista e gli altri due non in linea di vista, ed event

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9

Koda, Yusuke. "Visual Data-Driven Millimeter Wave Communication Systems." Doctoral thesis, Kyoto University, 2021. http://hdl.handle.net/2433/263790.

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10

Amadjikpe, Arnaud Lucres. "Integrated antennas on organic packages and cavity filters for millimeter-wave and microwave communications systems." Diss., Georgia Institute of Technology, 2012. http://hdl.handle.net/1853/43585.

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Driven by the ever growing consumer wireless electronics market and the need for higher speed communications, the 60-GHz technology gifted with an unlicensed 9 GHz frequency band in the millimeter-wave spectrum has emerged as the next-generation Wi-Fi for short-range wireless communications. High-performance, cost-effective, and small form-factor 60-GHz antenna systems for portable devices are key enablers of this technology. This work presents various antenna architectures built on low-cost organic packages. Planar end-fire switched beam antenna modules that can easily conform to various surf

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11

Sarkar, Saikat. "Silicon-based millimeter-wave front-end development for multi-gigabit wireless applications." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/26590.

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Thesis (Ph.D)--Electrical and Computer Engineering, Georgia Institute of Technology, 2008.<br>Committee Chair: Laskar, Joy; Committee Member: Chang, Jae Joon; Committee Member: Cressler, John D.; Committee Member: Kornegay, Kevin T.; Committee Member: Lee, Chang-Ho; Committee Member: Tentzeris, Manos M.. Part of the SMARTech Electronic Thesis and Dissertation Collection.

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12

Jia, Zhensheng. "Optical millimeter-wave signal generation, transmission and processing for symmetric super-broadband optical-wireless access networks." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2008. http://hdl.handle.net/1853/24640.

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Thesis (Ph.D.)--Electrical and Computer Engineering, Georgia Institute of Technology, 2009.<br>Committee Chair: Gee-Kung Chang; Committee Co-Chair: Jianjun Yu; Committee Member: John A. Buck; Committee Member: Joy Laskar; Committee Member: Umakishore Ramachandran; Committee Member: Ye Li

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13

Zapfe, Bettina Dorothee. "Millimetre wave propagation from high-altitude platforms." Thesis, University of Bath, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.275452.

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14

Lima, Antonio Cezar de Castro. "Convoluted element FSS and millimetre wave dichroics." Thesis, University of Kent, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.385891.

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15

Johansson, Leif Albin. "Broadband millimetre-wave radio over fibre systems." Thesis, University College London (University of London), 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.272419.

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16

Tao, Yuming. "Multiple-beam antenna array for millimeter-wave wireless communications." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape8/PQDD_0005/NQ39397.pdf.

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17

Li, Yuan. "Development of micromachined millimeter wave modules for wireless communication systems." Diss., Georgia Institute of Technology, 2010. http://hdl.handle.net/1853/34782.

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This research discusses the design, fabrication, integration, and characterization of micromachined millimeter-wave components and a signal source for THz multiplier source using the deep reactive ion etching technique. A wide range of advanced micromachined millimeter-wave components are proposed and fully validated with the measurement. These micromachined millimeter-wave passives include: the W-band straight and meander waveguides, W-band three-pole filter, waveguide hybrid and power divider, a novel CPW-to-waveguide transition and filter, and a novel cavity resonator for 60-GHz reconfigura

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18

Emrick, Rudy M. "On-chip antenna element and array design for short range millimeter-wave communications." Columbus, Ohio : Ohio State University, 2007. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1195741138.

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19

Hsueh, Yu-Ting. "Frontiers of optical networking technologies: millimeter-wave radio-over-fiber and 100g transport system for next-generation high-data-rate applications." Diss., Georgia Institute of Technology, 2012. http://hdl.handle.net/1853/43681.

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The enabling technologies and the issues of next-generation millimeter-wave wireless access network and 100G long-haul optical transport network were developed and identified. To develop a simple and cost-effective millimeter-wave optical-wireless system, all-round research on the technical challenges of optical millimeter-wave generation, transmission impairments compensation, and simple base station design were discussed. Several radio-over-fiber systems were designed to simultaneously deliver multi-band wireless services on a single optical infrastructure, enabling converged system control

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20

Azevedo, Daniel Filipe Pinheiro de. "Performance comparison of hybrid architectures for millimeter wave communicatins." Master's thesis, Universidade de Aveiro, 2016. http://hdl.handle.net/10773/16945.

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Mestrado em Engenharia Electrónica e Telecomunicações<br>A proliferação massiva das comunicações sem os faz prever que o número de utilizadores aumente exponencialmente até 2020, o que tornar a necessário um suporte de tráfego milhares de vezes superior e com ligações na ordem dos Gigabit por segundo. Este incremento exigir a um aumento significativo da e ciência espectral e energética. Impõe-se portanto, uma mudança de paradigma dos sistemas de comunicação sem os convencionais, imposta pela introdução da 5a geração. Para o efeito, e necessário desenvolver novas e promissoras técnicas de trans

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21

Sidelel, Mihret Getye. "Simulation-Based Stochastic Blockage Model for Millimeter-wave Communication." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-276841.

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Recently, the growing demand for high data rates in wireless communication, together with the scarcity of spectrum in existing microwave bands, has motivated the use of millimeter-wave (mmWave) bands for 5G and future wireless communications. Even though mmWaves are potential candidates for fulfilling this rising demand, they come along with their own drawbacks that need to be addressed. Sensitivity to blockages is one of these drawbacks. It is a major channel impairment that is of concern in the design of mmWaves communication systems. As such, different industrial and academic research activ

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22

Xu, Hao. "Terrestrial radio wave propagation at millimeter-wave frequencies." Diss., Virginia Tech, 2000. http://hdl.handle.net/10919/27522.

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This research focuses on radio wave propagation at millimeter-wave frequencies. A measurement based channel characterization approach is taken in the investigation. First, measurement techniques are analyzed. Three types of measurement systems are designed, and implemented in measurement campaigns: a narrowband measurement system, a wideband measurement system based on Vector Network Analyzer, and sliding correlator systems at 5.8+AH4AXA-mbox{GHz}, 38+AH4AXA-mbox{GHz} and 60+AH4AXA-mbox{GHz}. The performances of these measurement systems are carefully compared both analytically and experimen

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23

Duong, Ninh T. "Analysis and design of millimetre wave antenna array power combines /." Title page, table of contents and abstract only, 1998. http://web4.library.adelaide.edu.au/theses/09PH/09phd925.pdf.

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24

Lima, Claudio Ribeiro. "Microwave and millimetre-wave optoelecronic sources based on semiconductor lasers." Thesis, University of Kent, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.262614.

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25

Razavi, Keivan E. "Optical sources of millimetre-wave generation for radio-over-fibre systems." Thesis, University of Kent, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.263700.

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26

Antes, Jochen [Verfasser], and Ingmar [Akademischer Betreuer] Kallfass. "Multi-gigabit millimeter wave communication links / Jochen Antes ; Betreuer: Ingmar Kallfass." Stuttgart : Universitätsbibliothek der Universität Stuttgart, 2016. http://d-nb.info/1118369270/34.

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27

Nagvanshi, Preeti. "Analysis of multiple antenna ultra-wideband and millimeter wave communication systems." Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 2007. http://wwwlib.umi.com/cr/ucsd/fullcit?p3284213.

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Thesis (Ph. D.)--University of California, San Diego, 2007.<br>Title from first page of PDF file (viewed January 14, 2008). Available via ProQuest Digital Dissertations. Vita. Includes bibliographical references (p. 133-140).

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28

Marinkovich, Aaron James Angelo. "Coordinated Beamforming for Millimeter-wave Terrestrial Peer-to-Peer Communication Networks." Thesis, Virginia Tech, 2020. http://hdl.handle.net/10919/100589.

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Terrestrial mobile peer-to-peer millimeter wave networks will likely use beamforming arrays with narrow beams. Aligning narrow beams is difficult. One consideration for aligning narrow beams is co-channel interference. Beams can be aligned either on a per-link basis where co-channel interference is ignored, or on a global basis where co-channel interference is considered. One way to align beams on a global basis is coordinated beamforming. Coordinated beamforming can be defined as alignment of beams on a global basis, so as to jointly optimize the signal-to-interference-plus-noise ratio (SINR)

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29

Xie, Binbin. "The application of D2D communication in 60 GHz millimeter wave transmissions." Thesis, KTH, Skolan för elektro- och systemteknik (EES), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-187694.

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Motivated by the increase of traffic load in cellular network and the associated increase of traffic through the network, device-to-device (D2D) communication with 60GHz millimeter wave (mmWave) is a possible solution to manage this future task. In this research project, our investigation focuses on the benefits of combining D2D links and conventional links with 60 GHz mmWave. Our investigation is performed in two phases. At first, we consider a network that has only two users, to provide a better understanding of the performance of different communication schemes with 60 GHz mmWave in simpli

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30

Rodriguez, Michael M. Eng Massachusetts Institute of Technology. "Millimeter wave communications : from point-to-point links to agile network connections." Thesis, Massachusetts Institute of Technology, 2017. http://hdl.handle.net/1721.1/113113.

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Thesis: M. Eng., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, 2017.<br>This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.<br>Cataloged from student-submitted PDF version of thesis.<br>Includes bibliographical references (pages 46-50).<br>Millimeter wave (mmWave) technologies promise to revolutionize wireless networks by enabling multi-gigabit data rates. However, they suffer from high attenuation, and hence have to use highly directional antennas

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31

Juntunen, Eric A. "Low-power, high-efficiency, and high-linearity CMOS millimeter-wave circuits and transceivers for wireless communications." Diss., Georgia Institute of Technology, 2012. http://hdl.handle.net/1853/44703.

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This dissertation presents the design and implementation of circuits and transceivers in CMOS technology to enable many new millimeter-wave applications. A simple approach is presented for accurately modeling the millimeter-wave characteristics of transistors that are not fully captured by contemporary parasitic extraction techniques. Next, the integration of a low-power 60-GHz CMOS on-off keying (OOK) receiver in 90-nm CMOS for use in multi-gigabit per second wireless communications is demonstrated. The use of non-coherent OOK demodulation by a novel demodulator enabled a data throughput of 3

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32

Zhang, Qianqian. "Machine Learning for Millimeter Wave Wireless Systems: Network Design and Optimization." Diss., Virginia Tech, 2021. http://hdl.handle.net/10919/103893.

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Next-generation cellular systems will rely on millimeter wave (mmWave) bands to meet the increasing demand for wireless connectivity from end user equipment. Given large available bandwidth and small-sized antenna elements, mmWave frequencies can support high communication rates and facilitate the use of multiple-input-multiple-output (MIMO) techniques to increase the wireless capacity. However, the small wavelength of mmWave yields severe path loss and high channel uncertainty. Meanwhile, using a large number of antenna elements requires a high energy consumption and heavy communication overh

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33

Enjamio, Cabado Cristina. "Dynamic microscale rain structures and their application to millimetre wave radio communication systems." Thesis, University of Portsmouth, 2006. https://researchportal.port.ac.uk/portal/en/theses/dynamic-microscale-rain-structures-and-their-application-to-millimetre-wave-radio-communication-systems(b3d41210-0c79-4a3e-8d91-f4d1d6f5f8de).html.

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34

Viteri, Mera Carlos Andres. "Beamforming Techniques for Frequency-Selective and Millimeter-Wave Indoor Broadcast Channels." The Ohio State University, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=osu152344603415358.

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35

Alhalabi, Ramadan A. "High efficiency planar and RFIC-based antennas for millimeter-wave communication systems." Diss., [La Jolla] : University of California, San Diego, 2010. http://wwwlib.umi.com/cr/ucsd/fullcit?p3402274.

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36

Prasad, Anurag Shivam. "MAKING MILLIMETER WAVE COMMUNICATION POSSIBLE FOR NON-LINE-OF-SIGHT SCENARIOS: 5G." Miami University / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=miami1509985883360236.

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37

Barb, Gordana-Raluca. "Linear equalization techniques for hybrid systems in the millimeter wave band of communications." Master's thesis, Universidade de Aveiro, 2017. http://hdl.handle.net/10773/23470.

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Mestrado em Engenharia Eletrónica e Telecomunicações<br>Wireless communications are continuously evolving, and the demand for higher data rates, more capacity, a better quality of service and more coverage is rising. The next generation, 5G, is currently being developed and it is expected to be delivered by 2020. However, in order to fulﬁll the 5G requirements, such as a consistent user experience, peak bit rates of 10 to 50 Gbps, higher reliability and availability, changes in the cellular architecture are needed, using new technology. Millimeter waves are a promising carrier frequency for 5G

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38

Emrick, Rudy Michael. "On-chip antenna element and array design for short range millimeter-wave communications." The Ohio State University, 2007. http://rave.ohiolink.edu/etdc/view?acc_num=osu1195741138.

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39

Khosravi, Sara. "Seamless Millimeter-wave Connectivity via Efficient Beamforming and Handover." Licentiate thesis, KTH, Radio Systems Laboratory (RS Lab), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-292472.

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Extremely high data rate demands, and the spectrum scarcity at the microwave bands, make the millimeter wave (mmWave) band a promising solution to satisfy the high data rate demands in wireless networks. The main advantage of moving to the mmWave spectrum is the availability of large bandwidth. Moreover, due to an order of magnitude smaller wavelength of mmWave signals in compared to the conventional bands, many antenna elements can be incorporated in a small size chip to provide high directivity gain both at the transmitter and the receiver sides.Millimeter wave links experience severe vulner

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40

Yang, Jiarui. "Reinforcement Learning-based Handover in Millimeter-wave Networks." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-295495.

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Millimeter Wave (mmWave) is a key technology to meet the challenge of data rates and the lack of bandwidth in sub-6GHz networks. Due to a high operation frequency, the mmWave network has unique channel characteristics and a relatively high pathloss. Therefore, a dense deployment of Base Station (BS) is necessary, leading to a more frequent handover, which may cause a degradation of User Equipment (UE) experience. Furthermore, a massive number of devices cause an interference issue and a high dropping probability. In this project, we propose a handover method based on Reinforcement Learning (RL

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41

Beltrán, Ramírez Marta. "Photonic Techniques for Next-Generation Integrated Optical Networks Based on Ultra-Wideband Radio / Técnicas Fotónicas para Redes Ópticas Integradas de Próxima Generación Basadas en Radio de Banda Ultra Ancha." Doctoral thesis, Universitat Politècnica de València, 2012. http://hdl.handle.net/10251/15576.

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La presenta Tesis Doctoral encuentra su ámbito de aplicación en redes de acceso ópticas de fibra hasta el hogar o FTTH (del inglés fibre-to-the-home). Las redes FTTH han sido ampliamente desplegadas en todo el mundo y se prevé que evolucionen hasta arquitecturas de multiplexación por división en longitud de onda o WDM(dle inglés wavelength division multiplexing). Conforme los requerimientos de capacidady ancho de banda por usuario para servicios de comunicación de banda ancha se incrementan continuamente, tecnologías tales como hybrid wireless-optical, radio de banda ultra ancha o UWB(del ing

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42

Chatterjee, Shubhajeet. "On Enabling Virtualization and Millimeter Wave Technologies in Cellular Networks." Diss., Virginia Tech, 2020. http://hdl.handle.net/10919/100596.

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Wireless network virtualization (WNV) and millimeter wave (mmW) communications are emerging as two key technologies for cellular networks. Virtualization in cellular networks enables wireless services to be decoupled from network resources (e.g., infrastructure and spectrum) so that multiple virtual networks can be built using a shared pool of network resources. At the same time, utilization of the large bandwidth available in mmW frequency band would help to overcome ongoing spectrum scarcity issues. In this context, this dissertation presents efficient frameworks for building virtual network

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43

Belcher, Robert W. "Extremely High Frequency (EHF) Low Probability of Intercept (LPI) communication applications." Thesis, Monterey, California : Naval Postgraduate School, 1990. http://handle.dtic.mil/100.2/ADA226653.

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Thesis (M.S. in Telecommunications Systems Management)--Naval Postgraduate School, March 1990.<br>Thesis Advisor(s): Schwendtner, Thomas A. Second Reader: Davidson, K. L. "March 1990." Description based on title screen as viewed on August 25, 2009. DTIC Descriptor(s): Interception probabilities, communication and radio systems, communications networks, spectra, command and control systems, extremely high frequency, naval operations, tactical warfare, low rate, theses, scenarios, line of sight, military applications. Author(s) subject terms: Millimeter wave, EHF, Extremely High Frequency, LPI,

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44

Ghatak, Gourab. "Millimeter wave multi-RAT small cells for heterogeneous mobile services : performance analysis and optimization." Thesis, Université Paris-Saclay (ComUE), 2019. http://www.theses.fr/2019SACLT010/document.

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Les futures applications sans fil anticipent une explosion de la pléthore de cas d'utilisation et de services, qui ne peut être soutenue par des améliorations incrémentielles des schémas de communication existants. Pour cela, deux axes de recherche sont particulièrement intéressants: la densification du réseau à l'aide de petites cellules et la communication par ondes millimétriques (ondes millimétriques). Dans cette thèse, nous modélisons et évaluons des réseaux cellulaires constitués de petites cellules à ondes millimétriques utilisant la technique d'accès multi-radio (RAT) déployées au-dess

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45

Dominguez, Javier Bandera. "Radiowave propagation modelling of vertical characteristics of rainstorms for high elevation angle slant path communication systems at millimetre wavelengths." Thesis, University of York, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.311011.

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46

Ciocoveanu, Radu [Verfasser]. "Highly Integrated Millimeter-Wave CMOS Transceiver Frontend-Circuits for Radar and Communication Systems / Radu Ciocoveanu." München : Verlag Dr. Hut, 2020. http://d-nb.info/121947553X/34.

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47

Shanmugam, Pravinkumar. "Multiple-user multiple-input multiple-output beam-forming and frequency reuse in millimeter wave communication." Thesis, California State University, Long Beach, 2015. http://pqdtopen.proquest.com/#viewpdf?dispub=1603753.

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<p> This paper explains a new beam-forming technique implemented in a deterministic Multiple-Input Multiple-Output (MIMO) channel model in 60 GHz millimeter wave frequency. We calculate path loss between the transmitter and receiver antenna elements in the line of sight path. Assuming that Channel State Information (CSI) is known as the deterministic values at the transmitter, the Composite Transfer Function (CTF) derived from the CSI generates orthogonal beams. The orthogonal beam allows us to reuse the frequency at the same time slot with the capability of multi-user MIMO. Our beam forming t

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48

Imbert, Villà Marc. "Design and performance evaluation of millimeter-wave flat lens antennas for communications, radar and imaging applications." Doctoral thesis, Universitat Politècnica de Catalunya, 2016. http://hdl.handle.net/10803/397648.

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Millimeter-wave systems introduce a set of particular severe requirements from the antenna point of view in order to achieve specific performances. In this sense, high directive antennas are required to overcome the huge extra path loss. Moreover, each particular application introduces additional requirements. For example, in very high throughput (VHT) wireless personal area networks (WPANs) communication systems at 60 GHz band beam-steering antennas are needed to deal with high user random mobility and human-body shadowing characteristic of indoor environments. Similarly, beam-steering capabi

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Sobaihi, Khaled. "Design and verification of SC-FDE/OFDM communication schemes for millimetre-wave wireless system using FPGA technologies." Thesis, University of South Wales, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.589406.

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This thesis contributes to the development and characterization of millimetre-wave personal area networks (WPANs) in the 60 GHz frequency band. Single-carrier and multi carrier transmission techniques are considered in the implementation of a 64.8 GHz WPAN capable of achieving a reliable indoor link. Thus, single-carrier with frequency domain equalization (SC- FDE) and orthogonal frequency-division multiplexing (OFDM) communication schemes were designed and implemented to mitigate the multi path fading of the 60 GHz indoor channels. As a result, a complete millimetre-wave transceiver operating

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Kim, Jihwan. "High performance radio-frequency and millimeter-wave front-end integrated circuits design in silicon-based technologies." Diss., Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/44704.

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Design techniques and procedures to improve performances of radio-frequency and millimeter-wave front-end integrated circuits were developed. Power amplifiers for high data-rate wireless communication applications were designed using CMOS technology employing a novel device resizing and concurrent power-combining technique to implement a multi-mode operation. Comprehensive analysis on the efficiency degradation effect of multi-input-single-output combining transformers with idle input terminals was performed. The proposed discrete resizing and power-combining technique effectively enhanced the

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